| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5853741 | Food and Chemical Toxicology | 2011 | 6 Pages |
A simple, quick and reliable analytical method for the determination of 1-naphthylacetic acid in garlic and soil has been developed in this study. The residual levels and dissipation rates of 1-naphthylacetic acid in garlic and soil were determined by high performance liquid chromatography-tandem mass spectroscopy (HPLC-MS/MS). The limit of quantification (LOQ) of the developed method was 0.005Â mg/kg. The half-lives of 1-naphthylacetic acid in garlic plants and soil were 0.80-1.4Â days and 0.94-2.0Â days, respectively. The final residues of 1-naphthylacetic acid in garlic, garlic sprout and soil could not be detected and were all below 0.05Â mg/kg (the MRL of EU). Results of the ultimate residues in garlic and soil showed that this pesticide is safe to be used under the recommended dosages.
⺠Develop modified QuEChERS method to determine NAA in garlic and soil first. ⺠Analytes were analyzed by HPLC-MS/MS. ⺠Dissipation dynamics of NAA in garlic and oil were studied. ⺠Sample pretreatment, cleanup, and HPLC-MS/MS conditions were optimized.
